10 Tips To Know Before Buying An RV In 2024

Are you planning on buying an RV in the near future? Over the last couple of years, RVs have become increasingly popular. The Covid-19 pandemic requirements of social distancing and increased housing prices both play a role in more folks considering RVing as a lifestyle. But with all of us having different needs, finding the right rig can seem like a daunting task.

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10 Tips To Consider Before Buying an RV

There are an endless variety of vehicles available, so let&#;s try to simplify the decision-making process when buying an RV by discussing 10 tips for new buyers.

1. Decide on The Intended Use of Your RV

Do you want to live in it full time, or do you simply want to hit the road and get away from the daily grind occasionally for a weekend adventure?

Full-time RVers, especially those with family, will obviously require a larger rig with more amenities than an individual who only wants to camp occasionally.

It&#;s common knowledge that retired RVers who live in northern climes head south for the winter, but even those who are not retired or are not able to work from the road, can still enjoy the RV life by taking shorter trips and winterizing their rig over the colder months.

2. Choose the Type of RV That Meets Your Needs

Before you even start the process of buying an RV, spend some time doing Internet research on various types of RVs: Class A, Class B, Class C, truck campers and fifth-wheel trailers, ranging in length from 12 to 45 feet. (If these terms are unfamiliar, check out this article on RV types that explains the different types of RVs!)  

Regardless of your preference, one deciding factor is cost. New luxurious Class A motorhomes can cost upwards of $300,000. Fifth wheels are less than half that price and small trailers can be purchased for under $15,000.

Keep in mind that drivable RVs may require the purchase of a tow car to get around once you arrive at a destination, and non-motorized RVs obviously require a tow vehicle such as a truck or SUV with sufficient towing power for the intended trailer.

Also keep in mind that RVs longer than 35 feet may not be suitable for many state park or older campgrounds, which were designed for smaller rigs.

Consider joining a Facebook group to connect with other like-minded RVers, willing to share their advice and recommendations.

Also visit a dealership or RV show to get up-close and personal with various types of rigs. At this point, tell the salesperson you&#;re not ready to buy, you&#;re only looking, to take some pressure off the decision-making process.

For more tips on choosing the type of RV that best suits your needs, this article on choosing an RV can help!

3. Consider Your Options of Buying New or Used

If finances allow, you might think that buying new would be the obvious choice; however, even new RVs, especially in the last couple of years, can come with a lot of issues.

The demand for RVs is at an all-time high, often resulting in poorer quality control during manufacturing. Warranties may cover repairs but repeated visits to a dealership and waiting for repairs can take the fun out of RVing!

Also, the price of a new RV typically depreciates 10 to 20 percent per year in the first few years, which supports a decision to buy a used rig, maybe two or three years old, that has had its warranty work completed by the seller.

Keep in mind that whether you buy new or used, maintenance and repairs are a part of ownership. If you&#;re handy with tools, many issues can be resolved without involving a dealership or repair technician.

Numerous repair videos, involving everything from holding tanks to toilets, are available on the Internet to walk you through the repair. Also, fellow RVers are often willing to provide advice and support to assist you with your problem.

Learn more about making the decision to buy a new or used RV here.

4. Rent an RV Before Buying an RV

Various companies provide rentable RVs, both drivable and towable (Google &#;RV Rentals&#; in your city.). If you decide to rent a model that you expect to buy, spend some time planning your trip.

What type of RV will you rent and for how long? (A week should be plenty of time.) If you want to rent a towable, you will need to have an appropriate truck or SUV. What are your routes and destinations? Are there campgrounds available along the way? (Google RV Park or All Stays)

If you&#;re taking friends, does the RV allow for separate sleeping spaces? If pets are involved, make sure the unit is &#;pet friendly&#; as some rentals do not allow pets.

Are you comfortable driving the rig that you intend to rent? If not, take a test drive with the rental service.

Also, ask them to show you how to hook up the electric, water and sewer lines which you&#;ll likely use at full-service campgrounds.

Dumping your black-water tank can sometimes be a bit messy, but it is a good learning experience. Read the RV manual for information about the various systems: electrical, hydraulic, water, holding tanks, heating, air conditioning and propane.

During your trip, keep notes of what you liked and didn&#;t like about the RV so you can decide if it&#;s the one for you. If not, you can always rent a different model before you buy.

To get a better idea of the RV rental process, RVShare wrote this article about how to rent an RV for us. It helps when you know what to expect!

5. Determine Fair Market Value

If you decide to purchase a used RV, spend some time on the Internet (RV Trader, Craigslist, Facebook) to establish a fair price. You&#;ll notice a wide range of asking prices, based on how well the rig was maintained and motivation of the seller to close the deal.

Prices are typically lower in the fall months when camping season comes to a close, especially in northern states. Also, prices seem to be lower in southern states, which have a larger number of RVs. It&#;s all about supply and demand. Buying closer to home has the advantage of more convenient access to the unit.

Words of caution: beware of Internet scammers who advertise RVs that they don&#;t actually own. Many potential buyers have sent thousands of dollars as deposits and never heard from the seller again. Also, beware of buying an RV that is selling for a price &#;too good to be true.&#; I know of a guy who bought a large Class A for one dollar, without an inspection, and spent more on repairs than he was able to get back from selling it!

Learn more about how to buy an RV from a private seller safely here.

6. Have the RV Inspected Before Purchase

As a newbie RVer, especially if buying used, have the vehicle inspected by a qualified technician. Their report of issues will help determine whether you want to purchase a particular unit.

If you feel technically competent and prefer to do your own inspection, consider using a checklist (Google camping-canada.com). Take as much time as you need to ensure everything is working to your satisfaction.

Start by inspecting the maintenance records. While outside, climb up on the roof and look for cracks in the sealant, walk around the unit looking for warping or damage to the side walls, crawl underneath to inspect the undercarriage and suspension, check the tires&#; tread and age, and the condition of the battery. Tires and batteries generally have a five-year lifespan.

Inside, turn on all water taps, the water pump and appliances, open and close all vents, blinds and windows, flush the toilet, look for stains and soft spots in the flooring and look everywhere: walls, cupboards, closets and storage areas for mold, which indicates leaks.

If it&#;s a drivable unit, note the mileage and have the seller take you for a test drive to see how it handles on the road. And don&#;t be put off by a seller who gives the impression that you&#;re too inquisitive.

You can&#;t ask enough questions. For each maintenance issue, discuss who will be responsible for the cost of repairs, which may lower the asking price if you have to make the repairs.

7. Negotiate When Making an Offer

Once you decide on buying a particular RV, you can check NadaGuides.com, an automotive dealer&#;s guide, similar to Kelley Blue Book, to see what it is selling for in your area.

Regardless of whether you are buying privately or through a dealership, consider some negotiating tactics before you agree on a price.

After your inspection, let the seller know that you&#;re in no hurry to buy and need to think about it for a few days. That alone is enough for some sellers to try to close the deal by lowering the price.

Make sure you know your budget so you can stay within your price range. The seller may agree to a lower price.

If you&#;re looking during the fall months, suggesting that you might want to wait until next spring may result in a lower price since the seller certainly doesn&#;t want to maintain the unit over the winter.

Always offer 10 to 20 percent lower than the asking price, even for a new unit but especially for a unit that is one year old or more. You&#;d be surprised how often the offer is accepted. The more you can convince the seller that you&#;re a knowledgeable buyer, the more likely they&#;ll agree to a lower price.

8. Be Aware of the Paperwork Involved in Buying an RV

Once a price is agreed upon, make sure the details are specified on an &#;Offer to Purchase&#; form, which is available on the Internet.

This form, which can be authorized by a Notary Public, will include all relevant information to ensure the transaction is legal and proper, with an appropriate back-out clause if conditions are not met as stipulated.

Examine the title to determine whether there are any liens, which will have to be released before registration.

A Bill of Sale is required in most states to transfer the title of the vehicle and show proof of ownership.

Determine the cost of registration, insurance and taxes on your RV. Many state DMV offices offer that information on their websites.

9. Relocating Your New RV

With the paperwork completed, you&#;ll need to move it to your home or a temporary storage area.

Drivers are available for hire, or you can do it yourself, making sure your insurance is valid for the rig in question. For example, some states require a special license for pulling a trailer over 10,000 pounds or for driving a large RV with airbrakes, both of which involve a written and driving exam.

Your insurance is not valid without the license, which is sort of a catch-22 since the rig has to get to the DMV to do the driving exam.

If you intend to bring your RV across the border from the US to Canada, check with US Customs and the Registrar of Imported Vehicles (RIV) to verify the paperwork and inspection process. Within 45 days of importing an RV into Canada, an RIV inspection must be completed in order to obtain a license.

10. Planning Your Maiden Voyage in your New RV

Most people are excited, and maybe a bit nervous, to begin their adventures in their new RV.

Before doing so, spend a few days and nights, maybe in your driveway or a nearby campground, becoming familiar with living inside the confines of a smaller space.

And if you&#;re a newbie, practice turning and backing up in a vacant parking lot.

Take your time and expect multiple attempts to align it properly in a designated space, as you will be required to do at a campground without pull-through sites.

A word of caution: Always use a spotter, preferably with two-way headsets, to avoid hitting things above and on both sides of your rig.

If you preplanned your rental trip (Tip #4), you&#;ll need to make a lot of the same decisions. Because of the increasing number of RVs being purchased, ensure that your intended campgrounds have space, since many are fully booked during the busy season.

Finally, take your time and enjoy the journey as well as the destination. Stay safe out there and make some happy memories in your new RV!

Overview of Hydraulic Modular Trailer

The modular trailers is commonly used hydraulic multi axle trailer, also called hydraulic module trailer. The hydraulic axles modular trailers has the characteristics of compact structure, large bearing capacity, small turning radius, etc. the main beam strength can bear more concentrated load after special strengthening, the steering cylinder is built-in, and the steering force is large, convenient and practical.

The connection between the unit modular trailer and the unit modules is made up of several sets of universal connecting pieces at home and abroad. The connection strength is high, it is not easy to break, and the splicing is convenient, which can greatly improve the splicing speed.

The suspension frame and balance arm are welded structure and adopt Goldhofer and Scheuerle transporter design principle, with high strength and beautiful appearance.

Main components of hydraulic axles modular trailers

1) Main beam: welded into I-shape with high strength steel, and connecting ear plates are set at the lower part of main beam at both ends of module.

2) Auxiliary beam: welded with high-strength steel to form the bearing structure frame of Hydraulic modular trailer with main beam.

3) Beam: connecting the main beam and the auxiliary beam.

4) Inclined support: support the main beam and auxiliary beam.

5) End beam: steering end beam, connecting end beam and retaining beam.

6) Suspension system: it is supported on the auxiliary beam to support and connect the axle. The suspension system includes walking mechanism.

7) Steering system: transfer steering.

8) Hydraulic system: provide and transfer hydraulic power for suspension and steering.

9) Brake system: including service brake and parking brake, composed of air circuit, control system and actuator.

10) Connecting device: connecting pin, connecting bolt, connecting block, etc.

11) Auxiliary equipment: power unit, gooseneck, draw bar, control box, etc.

Hydraulic modular trailer dimensions

Platform size

platform length

The length of the platform can be spliced into different axes according to the actual use requirements, and each axis is 1.55m and 1.6m in length.

platform width

The width of the platform can be divided into 2 columns, 3 columns and 4 columns according to the use requirements. 2. The width of longitudinal light plate is 2.99m, and that of heavy plate is 3.4m or 3.6m; The width of 3 longitudinal light-weight plates is 4.81M; 4-column light

platform height

The height of the platform can be adjusted by adjusting the stroke of the suspension hydraulic cylinder, and the height of the platform can be raised and lowered from 0.75 m to 1.4 M. It is beneficial to pass through high-altitude obstacles and facilitate loading, unloading and other operations. Pay attention to the poor trafficability of the axis car when the cargo platform is too high or too low, especially the ground clearance.

Hydraulic modular trailer type

Type

N3.0

N3.4

G3.0

Platform Width (mm)

2,990

3,400

3,000

Wheelbase (mm)

1,550

1,600

1,500

Platform Height (mm)

1,080±300

1,070±210

1,175±300

Min. Height (mm)

780

860

875

Benefits of modular trailers

The ODC(over dimension cargo) ,For logistics, large items, as the name implies, are the items with advantages in weight and volume. In the transportation trailer, there are strict requirements for large items, which can not be completed by ordinary transportation vehicles, but by special transportation trailer.

hydraulic module trailer is widely used in the long-distance transportation of large-scale objects such as bridge tunnel construction, electric power construction, petrochemical construction and so on; The design concept is the most advanced in the world, with light weight, large load, wide range of adaptability, reliable and durable; The modular structure can be used to combine horizontally and vertically; Axis 2-7 of single vehicle; The combined load tonnage is from 50 tons to tons; The greatest advantage of the series of hydraulic module trailer is the possibility of multiple combinations. For large goods with medium height and high height, multiple modular loading platforms can be used for horizontal and longitudinal splicing. Users can combine them according to different weight, length and width of goods, so as to meet the requirements of cargo transportation, reduce transportation cost and shorten transportation cycle, such as equipped with customized turntable and concave module, It can be expanded into flexible trailer and concave flat trailer, which can transport super long structure and super high cargo.

Therefore, large equipment transportation generally refers to the transportation and distribution of large equipment.

Heavy cargo transportation includes over size and over weight.

Over height equipment (goods) refers to the loading outline size exceeding the vehicle gauge standard; over gauge equipment (goods) refers to the total weight of the vehicle acting on the bridge more than the design live load.

It mainly includes: generator stator, rotor, boiler drum, water wall, deaeration water tank, high and low pressure heater, girder, etc. in large-scale thermal power equipment; runner, upper and lower frame, rotor, stator, main shaft, stay ring, water guide mechanism, gate hoist, main transformer, station transformer, interconnection transformer, reactor, and high-voltage electrical equipment in large-scale hydraulic power equipment. All of them are ODC cargo, and need go with Modular trailer.

What are the applications of modular trailers

With the rapid development of China's economy and engineering construction, the transportation volume of large-scale super long, super wide and super high materials is increasing. Limited by the volume, mass and road conditions of the goods themselves, the traditional transport vehicles have been difficult to meet the requirements, sometimes only using a combined heavy-duty multi axle semi-trailer can solve the problem.

We have provided numerous excellent transport solutions and qualified equipment for lots of Heavy Duty Transport Enterprises,Railway Project Construction Companies,Power Construction Companies,Oil Field Construction Companies as well as Shipbuilding Companies both home and abroad.

The so-called combined heavy-duty multi axle semi-trailer refers to a kind of trailer which is coupled by a tractor, evolved from the combined heavy-duty multi axle semi-trailer. Through random combination (longitudinal or transverse splicing), various size models of semi-trailer can be derived, such as 3-axle, 4-axle, 5-axle Up to 10 or more axes. Having one such combined semi-trailer is equivalent to having several or even 10 or 20 ordinary semi-trailers. It can not only meet the needs of transportation of huge materials of different sizes, but also reduce the purchase cost of single size semi-trailer and greatly reduce the storage area. It's no exaggeration to say it's one for ten. Although the cost of purchasing this kind of vehicle is high, it is still favored by some special users.

Here are some examples field of modular trailer be used

Heavy Duty Transport Enterprises

Railway Project Construction Companies

Power Construction Companies

Oil Field Construction Companies as well as Shipbuilding Companies both in china and abroad

Your Professional Hydraulic Modular Trailer Manufacturer

we are a State-dedicated special purpose vehicle manufacturer with expertise in the design, manufacture, inspection, sales and service in special purpose vehicles (especially heavy-duty carriers). In particular, the parent company can design special purpose vehicles and heavy-duty carriers for different purposes according to different customer requirements on the transportation. The product series of the parent company include: 900T high-speed-railway carrier for concrete girder, 900T girder lifter, 120 ~ 800T hydraulic flatcar, construction vehicles, tankers, vans, public service vehicles, medical vehicle, cleaner vehicles, chemical liquid tanker, etc..

we has successfully supplied world-class products and service for customers from India(TCI,SFC,etc.),Holland(MammoetB.V.),SouthKorea(HyundaiShipbuilding),Canada,Argentina, Middle-east,and Southeast Asia Countries.The Hydraulic Module Trailer,Self-propelled Module Trailer,Shipyard Transporter,Steel Transporter,Girder Transporter,Truck Crane,Construction Machinery and other Special Purpose Vehicle of our Group have being creating treasure for the buyers from all walks of sectors in the world.

Since we have such strong basis, we are able to provide qualified product for our users. In the meantime, the overseas after-sale service and technical sustain has eased the worry of our customers to a large extent. We hope that we can be awarded the opportunity to serve you with good product and favorable price.

Our Service

After the trailer arrived, we will send our technician to the client, to supply the technical training to the operation persons. The main course will include illustration of the basic structure, hydraulic system, brake system and other parts of the trailer; refer to the corresponding chapter of the operation manual, to introduce the operation steps, noted items, security regulations, diagnosis and examination of failures.

Technical service

At the first time of escort transport operation by the client, we will send technician to participate, to supply complete and reliable technical guarantee.

As per the actual operation of the trailer, we will produce spare parts to guarantee that the supply of parts and components will be sufficient and in time.

At the course of overhaul and maintenance, we will give the client preference for procure the spare parts both on price and delivery.

Once failure happens, no matter what reasons, if client need, we will send technician to the site as soon as possible to assist to deal with the failure.

Ruiqianhe: Your Leading modular trailer Manufacturer

Technical Strength

Ruiqianhe have our own engineers and designers to give you professional suggestions for Solution, and so on. we will offer you the perfect design.

Substantial Experience

As one of the earliest companies engaged in manufacturing modular trailer in China, owns over 20 years of experience. We have customers all over the world in more than 60 countries.

Professional Technical Team

As a modular trailer manufacturer since , Ruiqianhe has professional and experienced engineers, with 20 years of experience in manufacture, service, and training. We are ahead of other competitors in technology. Our professional R&D team will provide you perfect trailer.

Hydraulic Modular Trailer: The Helpful Guide for Importers

1.what is a Hydraulic modular trailer

Part one: structure

Main components of Hydraulic modular trailer:

1) Main beam: welded into I-shape with high strength steel, and connecting ear plates are set at the lower part of main beam at both ends of module.

2) Auxiliary beam: welded with high-strength steel to form the bearing structure frame of Hydraulic modular trailer with main beam.

3) Beam: connecting the main beam and the auxiliary beam.

4) Inclined support: support the main beam and auxiliary beam.

5) End beam: steering end beam, connecting end beam and retaining beam.

6) Suspension system: it is supported on the auxiliary beam to support and connect the axle. The suspension system includes walking mechanism.

7) Steering system: transfer steering.

8) Hydraulic system: provide and transfer hydraulic power for suspension and steering.

9) Brake system: including service brake and parking brake, composed of air circuit, control system and actuator.

10) Connecting device: connecting pin, connecting bolt, connecting block, etc.

11) Auxiliary equipment: power unit, gooseneck, draw bar, control box, etc.

2. Suspension system:

2.1 composition of suspension system:

1) Suspension pivot: it is fixed on the auxiliary beam with bolts.

2) Suspension arm: a shaft seat hole is installed between the suspension arm and the pivot to make the suspension arm rotate under the drive of the steering tie rod to realize steering.

3) Suspension fork: connecting suspension arm and axle.

4) Oscillating axle: connecting wheels.

5) Suspension cylinder: connect the suspension arm and suspension fork, play a supporting role, can adjust the height of the cargo platform.

6) Wheel: including wheel hub, brake hub, brake shoe and tire.

Haiheyuan contains other products and information you need, so please check it out.

Additional reading:
How Does Electric Vehicle Charging Station Installation Work?
Top 5 Tips for Choosing a Car Carrier Semi Trailer Exporter
China to confirm new trailer standard for car carriers | Feature
Shipping Idea about Import the Trailers and Trucks from China

3. Steering system:

3.1 steering system composition:

The steering system is mainly composed of steering pivot, steering hydraulic cylinder, steering longitudinal rod, steering tie rod, intermediate shaft, steering control wheel, suspension and other components.

3.2.1 transmission of automatic steering

Drawbar &#; steering pivot &#; front half longitudinal link &#; control panel &#; tie rod &#; suspension &#; wheel.

&#; Front steering hydraulic cylinder &#; steering circuit &#; rear steering hydraulic cylinder &#; rear beam pivot &#; rear half longitudinal link &#; rear half steering control panel &#; rear half tie rod &#; rear half suspension &#; wheel.

3.2.2 transfer of control steering (take the former steering end beam control as an example)

Front half steering transmission: hydraulic power &#; front end beam control valve &#; front end beam steering cylinder rod cavity &#; front steering cylinder &#; front steering pivot &#; front longitudinal link &#; front steering control wheel &#; front tie rod &#; front suspension arm &#; wheel steering.

Rear half steering transmission: hydraulic power &#; front beam control valve &#; front beam steering cylinder rod cavity &#; front steering cylinder rod free cavity &#; hydraulic circuit &#; rear beam steering cylinder rod free cavity &#; rear beam pivot &#; rear longitudinal rod &#; rear steering control panel &#; rear tie rod &#; rear suspension arm &#; rear wheel steering.

3.3 steering control mode

3.3.1 automatic steering

The automatic steering is driven by the tractor, and the front part of the axis car is transmitted by the pull rod (mechanical transmission). The hydraulic cylinder of the rear half is transferred by the hydraulic circuit

3.3.2 steering control

The steering can be controlled by the front end beam or the rear end beam respectively. Operate the steering control valve handle on the front and rear control box to turn. Under special conditions, it can also be controlled at the same time, but the front and rear control should be coordinated

4. Gooseneck

4.1 characteristics of gooseneck

The power gooseneck is the connecting device of the axle car and the tractor to form the semi-trailer axle car. The utility model enables the axle car to obtain the advantages of a semi-trailer, and the power gooseneck has its own characteristics.

4.1.1 advantages: the load of the axis car can be divided into the tractor saddle (five wheel load), and the tractor counterweight is not required. Small swing of driving trailer can improve vehicle speed.

4.1.2 features: with ballast, it can realize the change of load on the saddle. With steering, it can realize automatic steering driven by tractor and hydraulic power control steering.

4.1.3 limitation: there should not be too many axes (20 axes), which will affect the adhesion of tractor.

4.2 gooseneck structure

The power gooseneck is composed of traction pin, traction turntable, ballast cylinder, power take-off cylinder, steering regulating cylinder, gooseneck support cylinder, accumulator, outrigger, connecting end beam, control components, etc.

4.3 gooseneck ballast

The load of gooseneck on saddle is determined by working pressure of ballast cylinder and installation hole position. The working pre

ssure of the ballast cylinder is determined by the loading weight, the loading position and the grouping of the fulcrum.

4.4 gooseneck steering transmission

4.4.1 transmission of gooseneck automatic steering

When the gooseneck steering is automatic, the tractor drives the turntable to rotate. The turntable transmits the steering to the power take-off cylinder. The power take-off cylinder acts. The hydraulic oil in the rod cavity of the power take-off cylinder enters the rod cavity of the steering adjusting cylinder to drive the steering adjusting cylinder to drive the steering longitudinal rod of the front half of the car. The longitudinal rod drives the steering control wheel and then the steering tie rod, Drive the suspension arm and wheels to realize the steering of the front half of the car. The steering signal of the rear half car is output from the rodless cavity of the power take-off cylinder, which is transmitted to the rodless cavity of the rear beam steering cylinder through the hydraulic pipeline. The rear steering cylinder drives the steering pivot of the rear beam, the pivot drives the steering longitudinal rod of the rear half car, the longitudinal rod drives the steering control wheel of the rear half car, and the steering control wheel drives the tie rod, Then drive the suspension arm and wheels of the rear half car to realize the steering of the rear half car.

4.4.2 gooseneck front automatic steering and rear control steering

Gooseneck control steering can realize the automatic steering of the front half of the car driven by the tractor, and the steering of the rear half of the car is controlled by the operator by hydraulic power. When steering, open the valve of power take-off cylinder rodless cavity and rear end beam steering cylinder rodless cavity circuit to connect the two closed circuits. The power take-off cylinder and the rear steering cylinder operate independently. The front half of the car is driven by the tractor, and the rear half of the car is driven by the operator to control the oil in the rod cavity of the rear steering cylinder.

4.4.3 front and rear steering control

The front and rear hydraulic power steering are controlled by the operator respectively. For the steering control of the front half of the vehicle, open the valve of the power take-off cylinder with rod cavity and the control cylinder with rod cavity, connect the two circuits, and the power take-off cylinder and the control cylinder act independently. The operator controls the steering control valve on the gooseneck to push the steering regulating cylinder to control the steering of the front half of the car. For the steering control of the rear half vehicle, the isolation valve of the rodless cavity of the power take-off cylinder and the rodless cavity of the rear beam steering cylinder is opened, and the two circuits are connected. The power take-off cylinder and the rear steering cylinder act independently. The operator controls the steering control valve of the rear beam, and the hydraulic power pushes the rod cavity of the rear steering cylinder, and the rear steering cylinder acts to realize the steering control of the rear half vehicle.

5. Long cargo turntable

To transport super long goods, in order to make the steering flexible, a steering wheel is added to the front and rear axis vehicle, which is called long goods turntable.

5.1 structure of long cargo turntable

The turntable is mainly composed of upper bearing surface, base, center ball pin, sliding shoe, servo cylinder and other structures

5.2 turning of long cargo turntable

The use of long cargo turntable can realize automatic steering driven by tractor and manual steering control. When driving on the highway, the tractor drives the automatic steering. When going in and out of the construction site, it will be turned by manual operation.

5.2.1 automatic steering

Automatic steering is driven by tractor. The tractor drives the front car to turn, and the steering signal is transmitted to the rear rotary table through the long goods. The rear rotary table drives the servo cylinder installed on the rear rotary table to act, and the rod less cavity of the servo cylinder is connected with the rod less cavity of the steering cylinder of the rear car. The steering signal is transmitted to the steering cylinder of the rear axle car through the hydraulic pipe, which drives the steering cylinder of the rear axle car to act and drive the rear axle car to turn.

One steering end beam is used when the number of rear axle lines is less, and two steering end beams are used when the number of rear axle lines is more. When a steering end beam of the rear car is turned, the rod less cavity of the steering cylinder on the turntable is connected with the rod less cavity of the steering cylinder on the rear end beam. The steering cylinder of the steering end beam moves with the steering cylinder on the turntable, and transmits the rotation of the turntable to the rear axle car, so that the rear axle car turns with the turntable. When the rear axle car has two steering end beams, just as when there is one end beam, the steering of the turntable is transferred from the rodless cavity of the steering cylinder of the rotary table to the rodless cavity of the steering cylinder of the rear axle car, which drives the rear half of the axle car to turn. Then, the rod cavity of the steering cylinder of the rear end beam is transmitted to the rod cavity of the front end beam to drive the front half of the axis car to turn.

5.2.2 steering control

In most cases, the front axle car is used to turn automatically while the rear axle car is used to control the turning. In special cases, the steering is controlled before and after use. The automatic steering and control steering of the front axle car are the same as that of the ordinary axle plate. When the rear axle car controls the steering, put the reversing valve of the connecting pipeline between the rotary table and the rear steering cylinder of the axle car into the manual control position. The two pipelines are connected, and the rotary table steering cylinder and the rear end beam steering cylinder form an independent steering circuit respectively. The axle car does not turn with the rotary table, but controls the rear end beam to control the steering of the axle car.

6. girder bridge

6.1 structure of girder bridge

The transportation mode of girder bridge can reduce the transportation height and disperse the concentrated load. It is used to transport heavy and super-high goods. Transport the transformer with girder bridge

The girder bridge is mainly composed of bearing beam, inclined fork beam, front and rear tower, inclined support rod, transverse support rod, suspension, cross arm beam, etc

6.2 turning of transport mode of girder bridge

The girder bridge transportation is similar to the long cargo turntable transportation in steering, which can realize the automatic steering driven by tractor and can also be controlled by hydraulic power.

The transport mode of girder bridge is to turn to hydraulic circuit.

Part two: performance parameters of Hydraulic modular trailer

1. parameters

The capacity of Hydraulic modular trailer is related to the use conditions and environmental conditions. Such as weather, road surface, loading, speed, vehicle technical conditions and other factors have a greater impact on the bearing capacity. The actual use should be considered.

1.1 uniaxial loading

longitudinal light plate single axle rated load 28 tons, Hydraulic modular trailer single axle weight 3 tons, therefore, single axle load 25 tons.

1.2 vehicle load

The Hydraulic modular trailer can be spliced into different axes, and the load-carrying capacity of the whole vehicle is not a simple sum of the single axle load. Various factors should be considered.

1.2.1 longitudinal load curve

The main beam of Hydraulic modular trailer has certain rigidity and strength. If the bending moment of the main beam is too large, which exceeds the design limit range of the main beam, the deformation will be too large or even damaged. The general instruction gives the value of allowable concentrated load, which should be observed in use.

1.2.2 lateral stability

When the center of gravity of the goods is high, it is necessary to consider the lateral overturning to prevent the lateral overturning caused by too large cross slope or partial load. Stability calculation must be carried out. Generally, it is calculated according to the allowable cross slope angle. It mainly depends on the number of columns of flatbed truck and the height of gravity center after loading. The empirical formula is as follows: the allowable cross slope angle = the column coefficient / the height between the center of gravity and the cargo platform; the column coefficient is 2, and the column is 21; 50 for 3 columns

1.2.3 load center

Three point support is adopted, and the loading center is in the center of triangle. The center of gravity of goods should be aligned with the loading center when loading.

The load center of gooseneck should be moved forward, considering that the load capacity of gooseneck is equal to that of more than one axis.

2.1 maximum steering angle

The maximum steering angle refers to the maximum allowable angle of the outermost axle at both ends of the axis car, generally 45 degrees, 50 degrees, 55 degrees, etc.

2.2 instantaneous rotation center

The center of rotation is the intersection of the extended line of the fixed axle and the extended line of the maximum steering axle, around which the axle car rotates when turning.

2.3 minimum turning radius

The distance from the center of rotation to the outermost track of the axis car when the axis car turns to the maximum angle.

2.4 traffic width at minimum turning radius

At the maximum turning angle of the Hydraulic modular trailer, the distance from the center of rotation to the outermost track minus the distance from the center to the innermost track.

3. platform size

3.1 platform length

The length of the pallet can be spliced into different axes according to the actual use requirements, and each axis is 1.55m and 1.6m in length.

3.2 platform width

The width of the platform can be divided into 2 columns, 3 columns and 4 columns according to the use requirements. 2. The width of longitudinal light plate is 2.99m, and that of heavy plate is 3.4m or 3.6m; The width of 3 longitudinal light-weight plates is 4.81M; 4-column light

3.3 platform height

The height of the platform can be adjusted by adjusting the stroke of the suspension hydraulic cylinder, and the height of the China heavy lift - China heavy lift lift light pallet can be raised and lowered from 0.75 m to 1.4 M. It is beneficial to pass through high-altitude obstacles and facilitate loading, unloading and other operations. Pay attention to the poor trafficability of the axis car when the cargo platform is too high or too low, especially the ground clearance.

4. Trafficability parameters

4.1 approach angle

Approach angle refers to the maximum slope that the front end of the axis car is allowed to pass when it is uphill.

4.2 departure angle

Departure angle refers to the minimum slope allowed at the rear end when the axis car is going downhill.

4.3 ground clearance

The ground clearance of the axis car refers to the distance from the lowest point of the axis car to the ground. The ground clearance is larger when the height of the axis car is 1.05M. When the cargo platform is too low, the main beam is close to the ground, which reduces the ground clearance. When the cargo platform is too high, the suspension arm is open, and the brake cylinder is close to the ground.

4.4 radius of concave curve

The radius of concave curve refers to the parameter that the axis vehicle can pass when passing through the excavated road surface, expressed in radius.

4.5 radius of convex curve

The radius of convex curve refers to the parameter that the axis vehicle can pass through the convex Road, which is expressed by radius.

Approach angle, departure angle, concave convex curve radius and other trafficability parameters are closely related to the number of axes. The longer the axis is, the smaller the allowable value is, and the larger the allowable value is in a short time.

5. Load distribution of axis car to ground

Because the Hydraulic modular trailer adopts hydraulic suspension, the suspension hydraulic cylinder is programmed into three independent circuits, and the pressure in each circuit is the same. Under the condition of uniform loading, the pressure of the three circuits is close to each other. The ground load of each axis is approximately the same.

6. Working pressure of hydraulic system

6.1 rated pressure of hydraulic circuit

The hydraulic power of the Hydraulic modular trailer is provided by the power unit. The engine of the power unit drives the hydraulic pump to output the hydraulic power. In order to protect the hydraulic pump and prevent the hydraulic components from being damaged by excessive pressure in the hydraulic circuit. The hydraulic circuit is equipped with a pressure limiting valve to limit the maximum pressure of the circuit. The pressure limiting valve of China heavy-lift lift plate is installed on the steering end beam, and the rated pressure (240 bar) has been adjusted at the factory. Generally, no adjustment is required. When the oil supply pipe and oil return pipe of the power unit are not connected with the steering end beam, the power unit will be damaged due to high pressure. Only after connecting the oil supply pipe and oil return pipe of the steering end beam, can the power unit be started. Limited pressure valves are generally installed on domestic power units. The rated pressure can be adjusted. The rated pressure should be adjusted according to the standard of the instruction manual, not too high.

6.2 actual working pressure of hydraulic circuit

The working pressure of the hydraulic circuit is not only limited by the pressure limiting valve, but also affected by the load. The working pressure is actually determined by the load. The pressure multiplied by the area of the actuating cylinder is the output force. No load, no pressure. When lifting or steering operation, the maximum pressure can reach the rated pressure, will not exceed the rated pressure. When the valve is closed and the load is too large, the actual working pressure may exceed the rated pressure, which will cause damage to the hydraulic components or hydraulic pipelines. If the load is overloaded, the pressure of the suspension cylinder will exceed the rated pressure, so that the pressure of the three-point support circuit will exceed the rated pressure. Sometimes, even if it is not overloaded, due to the inequality of road surface and uneven loading, the pressure of a support circuit will be too high and exceed the rated pressure. Pay attention in use.

7. Brake circuit air pressure

The rated air pressure of the brake circuit is 7.8 bar. Controlled by air pressure regulator.

8. Tire pressure

For 750r15x tire, the tire pressure standard is as follows:

Each axle load (deadweight + cargo weight) is 12 tons, each tire load is 3 tons, the driving speed is 25 km / h, and the tire pressure is 9.5 bar.

Each axis load (deadweight + cargo weight) is 14 tons, each tire load is 3.5 tons, the driving speed is 10 km / h, and the tire pressure is 10.5 bar.

What's the price of modular trailer

Due to different kinds of trailers, and this equipment can be customized.The reference price range for conventional models is US$15,000/line

How to choose modular trailer&#;

In order to recommend a suitable trailer to your company, the following product information needs to be confirmed:

1.Product type, such as capacity, length, height, etc.

2.Product dimensions (length, width and height). If there have multiple specifications, please list them or provide the maximum and minimum dimensions.

3.Product weight. If there have multiple specifications, please list or provide the maximum and minimum weight.

4. The speed requirements. whether it is passed at a uniform speed?

5.Accuracy requirements (how many axle line of the trailer is unqualified) or more than one less.

Other things to be verified are: the front and back steering, the suspension direction, the height of the platform from the ground, the steel grade of the product to be pointed.

If you don&#;t know these requirements well, it doesn&#;t matter. Contact customer service, we will guide you to choose the right trailer.

Do you have a manual or operation video for us to learn more about the trailer?

Yes, we can not only make manuals or operation videos according to your design, but also provide videos.

Can you customize modular trailer as required?

Yes, we can customize the trailer which according to customers' requirements.

What is the quality of your modular trailer?

The quality of our modular trailer is strictly controlled. After the finished product, we need more than several times of product test before it leaves the factory.

(1) Strength calculation report with applied materials information;

(2) 100%NDT(non-destructive inspection) report of steel plate, tube and welding rod;

(3) 100% X-ray inspection( (Longitudinal, transversal safety inspection)): ensure the quality of welding

(4) Hydraulic test: ensure the standard working pressure and safety;

(5) Third-party inspection report: By SGS or Lloyd

(6) Passed ISO:

Can we arrange technicians to go overseas for commissioning?

After the equipment leaves the factory, someone will follow up the transportation process. After the equipment arrives at the destination, there are detailed operations using video to guide the commissioning and installation. In the later stage, there is a professional technical team who can follow up the experience of remote video at any time.

For more Hydraulic Modular Trailer Specificationsinformation, please contact us. We will provide professional answers.